21219555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{1129}}^1$

素因数の和:1323

約数の個数: 32

約数和(自身を含む): 39052800

約数和(自身を除く): 17833245

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 179, 537, 895, 1129, 1253, 2685, 3387, 3759, 5645, 6265, 7903, 16935, 18795, 23709, 39515, 118545, 202091, 606273, 1010455, 1414637, 3031365, 4243911, 7073185, 21219555]

約数ペア:

[(1, 21219555), (3, 7073185), (5, 4243911), (7, 3031365), (15, 1414637), (21, 1010455), (35, 606273), (105, 202091), (179, 118545), (537, 39515), (895, 23709), (1129, 18795), (1253, 16935), (2685, 7903), (3387, 6265), (3759, 5645)]